Stereospecific Assay of (R)- and (S)-Goitrin in Commercial Formulation of Radix Isatidis by Reversed Phase High-Performance Liquid Chromatography

<div>Effect of (a) methanol concentration, (b) flow rate, and (c) column temperature on the retention time of (R)-goitrin (▲) and (S)-goitrin (■). Experimental conditions: S-Chiral A column (4.6 mm × 250 mm, 5 <i>μ</i>m), methanol/water, 245 nm, and injection volume of 10 <i>μ</i>L.</div>

Journal of Analytical Methods in Chemistry

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Figure 3

Figure 3: Stereospecific Assay of (R)- and (S)-Goitrin in Commercial Formulation of Radix Isatidis by Reversed Phase High-Performance Liquid Chromatography 

Figure 3 | Stereospecific Assay of (R)- and (S)-Goitrin in Commercial Formulation of Radix Isatidis by Reversed Phase High-Performance Liquid Chromatography 